OF WESTERN PENNSYLVANIA 345 



Center : Edge of sink-hole pond, Scotia, September 



22, 1909. O. E. J. 

 Fayette : On rocks in edge of Meadow Run, May 



30, 1908. O. E. J. and G. K. J. 

 McKean : Lewis' Run, Bradford, January 24, 1895. 



D. A. B. 

 Westmoreland : Garrett Farm, twQ miles south of Traf- 



ford, August 21, 1910. O. E. J. 



14a. Brachythecium flagellate variety homomallum (Bryologia 



Europsea) New Combination. 



{B. phivwsuiii var. homomaUnm Bryologia Europseaj. 



(Plate LIl) 



This variety differs from the type of the species in hav- 

 ing the leaves distinctly falcate-secund. It is said to be gen- 

 erally smaller with narrower leaves and with the capsule small 

 and ovate. In the same pockets with typical B. flagellare can 

 often be found specimens with characters approaching more or 

 less closely the variety. The following pocket of specimens 

 perhaps typical of the variety: 



McKean : Gate's Hollow, Bradford. April 18, 1897 



■ D. A. B. (Figured). 



4. CIRRIPHYLLUM Grout. 



Dioicous : slender to robust, widely cespitose, whitish to 

 yellowish-green, rarely darker, mostly lustrous : stem creeping 

 to ascending, often stolon-like, pinnately to fasciculately 

 branched, often with flagellae ; branches ascending to erect, 

 more or less densely-leaved and julacequs ; leaves uniform, 

 often spreading, often drying imbricate, concave, somewhat 

 weakly plicate, ovate to oblong from a somewhat narrov/ed 

 and decurrent base, more or less abruptly lanceolate to pilifer- 

 ous at the apex, plane-margined, serrate to entire ; costa simple, 

 ending at or above the middle of the leaf, never ending in a 

 dorsal spine; median leaf-cells narrowly prosenchymatous, 

 smooth, the basal, shorter, thickened, and porose, the alar 

 more or less numerous, short-rectangular to quadrate, mostly 

 green ; inner perichaetial leaves from a sheathing base abruptly 

 long and finely acuminate : seta elongate, mostly rough ; cap- 

 sule cernuous to horizontal, oval to oblong-oval, more or less 

 dorsally gibbous, rarely erect and sub-cylindric ; annulus pres- 

 ent; peristome as in Brachythecium : lid usually more or less 

 long-rostrate from a conic base. 



A small genus of about 14 species, mostly in temperate 

 regions on rocks and earth ; 4 species in North America ; 2 

 species in our region. 



